[PATCH 4/5] IPVS: Remove unused return value of protocol state transitions

[Simon Horman <horms@xxxxxxxxxxxx>]

Acked-by: Julian Anastasov <ja@xxxxxx>
Acked-by Hans Schillstrom <hans@xxxxxxxxxxxxxxx>
Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
---
 include/net/ip_vs.h                   |    6 +++---
 net/netfilter/ipvs/ip_vs_core.c       |   13 ++++++-------
 net/netfilter/ipvs/ip_vs_proto_sctp.c |   14 ++++----------
 net/netfilter/ipvs/ip_vs_proto_tcp.c  |    6 ++----
 net/netfilter/ipvs/ip_vs_proto_udp.c  |    5 ++---
 5 files changed, 17 insertions(+), 27 deletions(-)

diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index a5f0f6b..139784e 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -425,9 +425,9 @@ struct ip_vs_protocol {
 
        const char *(*state_name)(int state);
 
-       int (*state_transition)(struct ip_vs_conn *cp, int direction,
-                               const struct sk_buff *skb,
-                               struct ip_vs_proto_data *pd);
+       void (*state_transition)(struct ip_vs_conn *cp, int direction,
+                                const struct sk_buff *skb,
+                                struct ip_vs_proto_data *pd);
 
        int (*register_app)(struct net *net, struct ip_vs_app *inc);
 
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 4f77bb1..00ea1ad 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -188,14 +188,13 @@ ip_vs_conn_stats(struct ip_vs_conn *cp, struct 
ip_vs_service *svc)
 }
 
 
-static inline int
+static inline void
 ip_vs_set_state(struct ip_vs_conn *cp, int direction,
                const struct sk_buff *skb,
                struct ip_vs_proto_data *pd)
 {
-       if (unlikely(!pd->pp->state_transition))
-               return 0;
-       return pd->pp->state_transition(cp, direction, skb, pd);
+       if (likely(pd->pp->state_transition))
+               pd->pp->state_transition(cp, direction, skb, pd);
 }
 
 static inline int
@@ -557,7 +556,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff 
*skb,
                ip_vs_in_stats(cp, skb);
 
                /* set state */
-               cs = ip_vs_set_state(cp, IP_VS_DIR_INPUT, skb, pd);
+               ip_vs_set_state(cp, IP_VS_DIR_INPUT, skb, pd);
 
                /* transmit the first SYN packet */
                ret = cp->packet_xmit(skb, cp, pd->pp);
@@ -1490,7 +1489,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int 
af)
        struct ip_vs_protocol *pp;
        struct ip_vs_proto_data *pd;
        struct ip_vs_conn *cp;
-       int ret, restart, pkts;
+       int ret, pkts;
        struct netns_ipvs *ipvs;
 
        /* Already marked as IPVS request or reply? */
@@ -1591,7 +1590,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int 
af)
        }
 
        ip_vs_in_stats(cp, skb);
-       restart = ip_vs_set_state(cp, IP_VS_DIR_INPUT, skb, pd);
+       ip_vs_set_state(cp, IP_VS_DIR_INPUT, skb, pd);
        if (cp->packet_xmit)
                ret = cp->packet_xmit(skb, cp, pp);
                /* do not touch skb anymore */
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c 
b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index d12ed53..1fbf7a2 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -906,7 +906,7 @@ static const char *sctp_state_name(int state)
        return "?";
 }
 
-static inline int
+static inline void
 set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp,
                int direction, const struct sk_buff *skb)
 {
@@ -924,7 +924,7 @@ set_sctp_state(struct ip_vs_proto_data *pd, struct 
ip_vs_conn *cp,
        sch = skb_header_pointer(skb, ihl + sizeof(sctp_sctphdr_t),
                                sizeof(_sctpch), &_sctpch);
        if (sch == NULL)
-               return 0;
+               return;
 
        chunk_type = sch->type;
        /*
@@ -993,21 +993,15 @@ set_sctp_state(struct ip_vs_proto_data *pd, struct 
ip_vs_conn *cp,
                cp->timeout = pd->timeout_table[cp->state = next_state];
        else    /* What to do ? */
                cp->timeout = sctp_timeouts[cp->state = next_state];
-
-       return 1;
 }
 
-static int
+static void
 sctp_state_transition(struct ip_vs_conn *cp, int direction,
                const struct sk_buff *skb, struct ip_vs_proto_data *pd)
 {
-       int ret = 0;
-
        spin_lock(&cp->lock);
-       ret = set_sctp_state(pd, cp, direction, skb);
+       set_sctp_state(pd, cp, direction, skb);
        spin_unlock(&cp->lock);
-
-       return ret;
 }
 
 static inline __u16 sctp_app_hashkey(__be16 port)
diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c 
b/net/netfilter/ipvs/ip_vs_proto_tcp.c
index c0cc341..ef8641f 100644
--- a/net/netfilter/ipvs/ip_vs_proto_tcp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c
@@ -546,7 +546,7 @@ set_tcp_state(struct ip_vs_proto_data *pd, struct 
ip_vs_conn *cp,
 /*
  *     Handle state transitions
  */
-static int
+static void
 tcp_state_transition(struct ip_vs_conn *cp, int direction,
                     const struct sk_buff *skb,
                     struct ip_vs_proto_data *pd)
@@ -561,13 +561,11 @@ tcp_state_transition(struct ip_vs_conn *cp, int direction,
 
        th = skb_header_pointer(skb, ihl, sizeof(_tcph), &_tcph);
        if (th == NULL)
-               return 0;
+               return;
 
        spin_lock(&cp->lock);
        set_tcp_state(pd, cp, direction, th);
        spin_unlock(&cp->lock);
-
-       return 1;
 }
 
 static inline __u16 tcp_app_hashkey(__be16 port)
diff --git a/net/netfilter/ipvs/ip_vs_proto_udp.c 
b/net/netfilter/ipvs/ip_vs_proto_udp.c
index f1282cb..f4b7262 100644
--- a/net/netfilter/ipvs/ip_vs_proto_udp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_udp.c
@@ -454,18 +454,17 @@ static const char * udp_state_name(int state)
        return udp_state_name_table[state] ? udp_state_name_table[state] : "?";
 }
 
-static int
+static void
 udp_state_transition(struct ip_vs_conn *cp, int direction,
                     const struct sk_buff *skb,
                     struct ip_vs_proto_data *pd)
 {
        if (unlikely(!pd)) {
                pr_err("UDP no ns data\n");
-               return 0;
+               return;
        }
 
        cp->timeout = pd->timeout_table[IP_VS_UDP_S_NORMAL];
-       return 1;
 }
 
 static void __udp_init(struct net *net, struct ip_vs_proto_data *pd)
-- 
1.7.5.4

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